Dart flutter pub run build_runner 卡住了

我在运行这个项目时遇到了问题

flutter pub run build_runner build --delete-conflicting-outputs

该命令没有出错，但被卡在第一个文件中:

WARNING] No actions completed for 15.0s, waiting on:
  - auto_route_generator:autoRouteGenerator on lib/ui/shared/ui_helpers.dart
  - auto_route_generator:autoRouteGenerator on lib/ui/views/settings/settings_datamodel.dart
  - auto_route_generator:autoRouteGenerator on lib/ui/views/settings/settings.dart
  - auto_route_generator:autoRouteGenerator on lib/ui/views/review_invitation/review_invitation_datamodel.dart
  - auto_route_generator:autoRouteGenerator on lib/ui/views/review_invitation/review_invitation.dart
  .. and 9 more

[INFO] 1m 17s elapsed, 1/15 actions completed.

以下是我的pubspec:

dependencies:
  flutter:
    sdk: flutter

  # see below for explanation
  stacked_services:
  auto_route:
  stacked: ^1.7.6
  stacked_hooks: 0.1.1+3
  flutter_hooks:
  get_it:
  injectable:
  validators: ^2.0.0 

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter

  build_runner:
  auto_route_generator:
  injectable_generator:

而这是我的路由的课程.dart

import 'package:auto_route/auto_route_annotations.dart';
import 'package:myapp/ui/views/StartupView.dart';

@MaterialAutoRouter(
  routes: <AutoRoute>[
    MaterialRoute(page: StartupView, initial: true),
  ],
)
class $Router {}

有什么建议吗？